E-mail: [email protected]
Phone: +86 135 6411 2158
E-mail: [email protected]
Phone: +86 135 6411 2158
Date: Aug 21, 2024
EN-GJL-300 is a standard grade of gray cast iron that conforms to European standards (EN 1561). Here are some typical features and properties of EN-GJL-300 grade gray cast iron:
1. Chemical Composition:
EN-GJL-300 typically contains around 3% carbon, 2% silicon, 0.5% manganese, and traces of sulfur and phosphorus. The exact chemical composition may vary slightly depending on the specific manufacturer.
2. Tensile Strength:
The tensile strength of EN-GJL-300 grade gray cast iron is around 300 MPa, which is reflected in the numerical designation.
3. Hardness:
EN-GJL-300 grade gray cast iron is characterized by a Brinell hardness ranging from 190 to 220 HB.
4. Machinability:
Gray cast iron with this grade typically exhibits good machinability, making it relatively easy to machine into various shapes and components.
5. Wear Resistance:
EN-GJL-300 grade gray cast iron offers moderate wear resistance, making it suitable for applications where components are subjected to friction and abrasion.
6. Damping Capacity:
Gray cast iron is known for its excellent damping capacity, which can help reduce vibrations and noise in applications such as machinery bases or parts.
7. Thermal Conductivity:
It has relatively high thermal conductivity, allowing for efficient dissipation of heat in applications where thermal management is important.
8. Corrosion Resistance:
While gray cast iron is prone to rusting and corrosion in certain environments, proper surface treatments and coatings can enhance its resistance to corrosion.
9. Fluidity:
Gray cast iron typically has good fluidity, which is beneficial for casting intricate shapes and thin sections.
10. Application:
EN-GJL-300 grade gray cast iron is commonly used in various industrial applications, including automotive components, machine tools, pump housings, valve bodies, and structural parts that require good strength and damping properties.
11. Cost-Effectiveness:
Gray cast iron is generally cost-effective compared to other materials, making it a preferred choice for applications where its properties align with the requirements.
12. Machining Characteristics:
It can be easily machined, drilled, and tapped, allowing for complex shapes and features to be produced with relative ease.
These features make EN-GJL-300 grade gray cast iron a versatile material suitable for a range of applications where its specific properties meet the requirements of the components being produced.
Comparing EN-GJL-300 grade gray cast iron with other grades can provide insights into their respective properties and applications. Here is a comparison between EN-GJL-300 and a common gray cast iron grade, EN-GJL-250:
EN-GJL-300 vs. EN-GJL-250:
1. Chemical Composition:
EN-GJL-300: Contains around 3% carbon, 2% silicon, 0.5% manganese.
EN-GJL-250: Contains a slightly lower percentage of carbon and silicon compared to EN-GJL-300.
2. Tensile Strength:
EN-GJL-300: Tensile strength of around 300 MPa.
EN-GJL-250: Tensile strength typically lower than EN-GJL-300, around 250 MPa.
3. Hardness:
EN-GJL-300: Brinell hardness ranging from 190 to 220 HB.
EN-GJL-250: Brinell hardness may vary but is generally lower than that of EN-GJL-300.
4. Machinability:
Both grades exhibit good machinability, but EN-GJL-300 may have slightly better machining characteristics due to its higher strength.
5. Wear Resistance:
EN-GJL-300: Offers moderate wear resistance.
EN-GJL-250: Similar wear resistance to EN-GJL-300.
6. Damping Capacity:
Both grades are known for their excellent damping capacity, reducing vibrations and noise in applications.
7. Thermal Conductivity:
EN-GJL-300: High thermal conductivity for efficient heat dissipation.
EN-GJL-250: Similar thermal conductivity to EN-GJL-300.
8. Corrosion Resistance:
Both grades are prone to rusting and corrosion, but can be improved with surface treatments.
9. Fluidity:
Both grades offer good fluidity for casting intricate shapes and thin sections.
10. Applications:
EN-GJL-300: Used in applications requiring higher tensile strength and hardness, such as automotive components, machine tools, and pump housings.
EN-GJL-250: Suitable for applications where slightly lower strength and hardness are acceptable, such as machinery bases and valve bodies.
11. Cost-Effectiveness:
EN-GJL-250 may be slightly more cost-effective than EN-GJL-300 due to its lower strength and hardness.
12. Machining Characteristics:
Both grades are easy to machine, drill, and tap for producing complex shapes, but EN-GJL-300 may require more robust machining tools due to its higher strength.
When choosing between EN-GJL-300 and EN-GJL-250, considerations such as required strength, hardness, and cost can help determine the most suitable grade for a specific application.
EN-GJL-300 grade gray cast iron is a versatile material with various properties that make it suitable for a range of applications across different industries. Some common applications of EN-GJL-300 grade gray cast iron include:
1. Automotive Industry:
Engine components such as cylinder blocks, cylinder heads, and brake drums.
Transmission components like housings and gearboxes.
Brake discs and brake calipers.
2. Machinery and Equipment:
Machine tool components such as beds, bases, and columns.
Pump housings and impellers.
Valve bodies and covers.
Bearing housings and supports.
3. Construction Industry:
Counterweights for heavy machinery.
Building components like decorative elements, manhole covers, and drainage grates.
Support structures and frames.
4. Railway Industry:
Railway brake shoes and components.
Railway crossings and track components.
5. Marine Industry:
Marine engine components.
Ship propellers and parts subjected to corrosion.
6. Agricultural Machinery:
Components for tractors and agricultural equipment.
Tillage equipment parts.
7. Industrial Equipment:
Gearbox housings and covers.
Hydraulic system components.
Compressor parts.
8. Energy Sector:
Turbine components.
Pump housings and impellers in power generation.
9. Mining Industry:
Crusher parts.
Conveyor components.
Wear-resistant components.
10. General Engineering:
Gear housings and supports.
Pulleys and sheaves.
Various machine components requiring strength and wear resistance.
EN-GJL-300 grade gray cast iron is valued for its combination of strength, wear resistance, machinability, and damping properties, making it suitable for applications where these characteristics are required. It is commonly used in industries where components are subjected to heavy loads, friction, and wear. Its ability to absorb vibrations and reduce noise makes it ideal for applications where damping is essential.
The price of EN-GJL-300 grade gray cast iron can vary depending on various factors such as the current market conditions, supplier, quantity ordered, quality specifications, and additional processing or finishing requirements.
Gray cast iron prices typically ranged from $0.70 to $1.50 per pound or $1,540 to $3,300 per metric ton. EN-GJL-300 grade gray cast iron, being a specific grade with defined properties, may fall within this general price range, but variations are possible.
Typically, the price of gray cast iron in China ranged from around 6,500 to 9,000 Chinese Yuan per ton. However, specific prices for EN-GJL-300 grade gray cast iron may differ from these general figures.
For the most accurate and up-to-date pricing information, it would be advisable to contact local suppliers, foundries, or distributors specializing in gray cast iron and inquire about the current pricing for EN-GJL-300 grade specifically. Prices can fluctuate over time due to market conditions, demand, and other factors, so obtaining quotes directly from suppliers is the best way to get precise pricing information.